% APNIC found the following authoritative answer from: whois.apnic.net

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS17653 - AS18431'

as-block:       AS17653 - AS18431
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2019-01-08T23:19:07Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS17832 - AS17881'

as-block:       AS17832 - AS17881
descr:          KRNIC-ASBLOCK-AP
descr:          KRNIC
descr:          Korea Network Information Center
country:        KR
admin-c:        HM127-AP
tech-c:         HM127-AP
remarks:        Authoritative information regarding AS Number
remarks:        assignments made from within this block can also be
remarks:        queried at whois.nic.or.kr
mnt-by:         APNIC-HM
mnt-lower:      MNT-KRNIC-AP
last-modified:  2017-06-15T04:25:42Z
source:         APNIC

person:         Host Master
address:        Jeollanam-do Naju-si Jinheung-gil
country:        KR
phone:          +82-2-405-5118
e-mail:         hostmaster@nic.or.kr
nic-hdl:        HM127-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2019-05-22T01:20:31Z
source:         APNIC

% Information related to 'AS17878'

% Abuse contact for 'AS17878' is 'irt@nic.or.kr'

aut-num:        AS17878
as-name:        MARK1-AS-KR
descr:          DREAMMARK1
country:        KR
admin-c:        AM2195-AP
tech-c:         AM2195-AP
import:         from AS38108
                action pref=120;
                accept ANY
import:         from AS38661
                action pref=100;
                accept ANY
import:         from AS4766
                action pref=300;
                accept ANY
import:         from AS7562
                action pref=300;
                accept ANY
import:         from AS9457
                action pref=300;
                accept ANY
export:         to AS38108
                announce AS17878
export:         to AS38661
                announce AS17878
export:         to AS4766
                announce AS17878
export:         to AS7562
                announce AS17878
export:         to AS9457
                announce AS17878
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2023-08-22T00:02:03Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Jeollanam-do Naju-si Jinheung-gil
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2021-06-15T06:21:49Z
source:         APNIC

person:         AS Manager
address:        Seoul Guro-gu Digital-ro 31-gil 61
country:        KR
phone:          +82-2-6007-6120
e-mail:         ipadm@dream-mark1.co.kr
nic-hdl:        AM2195-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2022-09-14T02:04:03Z
source:         APNIC

% Information related to 'AS17878'

aut-num:        AS17878
as-name:        MARK1-AS-KR-KR
descr:          DREAMMARK1
country:        KR
import:         from 38108 action pref=120 accept ANY
import:         from 4766 action pref=300 accept ANY
import:         from 7562 action pref=300 accept ANY
import:         from 9457 action pref=300 accept ANY
import:         from 38661 action pref=100 accept ANY
export:         to 38108 announce AS17878
export:         to 4766 announce AS17878
export:         to 7562 announce AS17878
export:         to 9457 announce NEW
export:         to 38661 announce AS17878
admin-c:        AM5978-KR
tech-c:         AM5978-KR
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         AS Manager
address:        Seoul Guro-gu Digital-ro 31-gil 61
address:        701,7F
country:        KR
phone:          +82-2-6007-6120
e-mail:         ipadm@dream-mark1.co.kr
nic-hdl:        AM5978-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

% This query was served by the APNIC Whois Service version 1.88.25 (WHOIS-AU2)

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